Effect

Generation I-II

Mega Drain inflicts damage, and 50% of the damage dealt to the target is restored to the user. The amount of HP recovered is rounded down unless Mega Drain deals only 1 HP of damage. In this case, 1 HP would be restored to the user.

If Mega Drain breaks a substitute, no HP will be restored to the user. If HP is restored to the user when its current HP is greater than its maximum HP, its current HP will be set equal to its maximum HP.

In Pokémon Stadium, Mega Drain will always miss if the opponent has a substitute.

Mega Drain has 10 PP.

Generation III

Mega Drain functions the same as in Generation II, however, when used on a Pokémon with the Liquid Ooze Ability, the user will lose the amount of HP it would have gained instead.

Generation IV and V

Mega Drain's base PP was increased to 15. If the user has a Big Root as its held item, it will recover 30% more HP than it normally would. Big Root does not increase damage dealt. All other effects are the same.

Description

Games

Description

A Grass-type attack. It adds half the HP it drained from the target to the attacker's HP.

The bud on Budew's head glows white, and it shoots a dark green beam from its bud at the opponent. The green beam grabs the opponent, traps it inside and sucks its energy. As it does, the opponent becomes outlined in red and the beam turns red. The beam releases the opponent and goes back to Budew. Budew glows white when the beam goes back to it, and all of its injuries disappear.